In the recent COVID-19 pandemic, the world has seen the importance of technology usage where multiple activities were conducted virtually for life sustainability. There is an increase of activities happening in the virtual platform, supporting different types of businesses including retail and services. The activities encompass digitization of businesses with the implementation of new technologies. This research is a review of existing studies regarding e-commerce in current pandemic times. This research is expected to produce dominant activity segment(s) in e-commerce and explore further into that topic. The findings shall provide a starting point for other research topics related to e-commerce and technology.

COVID-19, which is caused by the SARS-CoV-2 virus, is the current global pandemic. As it spreads at an exponential and precipitous rate, it causes significant organ damage, which can potentially lead to death. Although there appears to be no specific cure or resistance to this outbreak, the use and administration of Vitamin D (VD) supplements is still a viable option, as evidenced by numerous clinical trials, studies, and observations. The results of the previous investigation have revealed that people with COVID-19 had reduced levels of VD, especially those with severe and critical diseases. The arrangement of receptors such as the angiotensin-converting enzyme (ACE-II) is altered by VD. As a result, it plays an important role in immune system responses to cytokine storms and interleukins. This review aims to uncover and explain how VD might help in combating COVID-19 and possibly hold the key to minimizing its hazard in the light of currently available therapeutic strategies. Finally, we compare and contrast other researcher’s approaches to VD and COVID-19.